CSE Study Reveals Alarming Rise in Vehicular Pollution During Early Winter
A CSE study indicates a significant increase in vehicular pollution, particularly PM2.5 and NO2, in Delhi-NCR during early winter.
Photo by Ravi Sharma
Quick Revision
Vehicular pollution, especially PM2.5 and NO2, increased in Delhi-NCR during October-November.
CSE study found that NO2 levels were 1.5-2 times higher than the safe standard.
Vehicles contribute significantly to Delhi's air pollution, alongside stubble burning and industrial emissions.
Key Dates
Key Numbers
Visual Insights
Delhi-NCR: Vehicular Pollution Hotspot in Early Winter
This map highlights Delhi-NCR as the primary region experiencing a significant rise in vehicular pollution (PM2.5 and NO2) during the early winter months of October and November, as identified by the CSE study. The red marker indicates a critical pollution zone.
Loading interactive map...
Exam Angles
Environmental pollution: causes, effects, and mitigation strategies.
Government policies and initiatives: National Clean Air Programme (NCAP), Graded Response Action Plan (GRAP), Bharat Stage (BS) emission norms, Electric Vehicle (EV) policy, Vehicle Scrappage Policy.
Atmospheric science: temperature inversion, particulate matter formation, role of meteorological factors.
Public health implications of air pollution.
Role of statutory bodies and research organizations: Commission for Air Quality Management (CAQM), Central Pollution Control Board (CPCB), Centre for Science and Environment (CSE).
Sustainable urban development and transport planning.
View Detailed Summary
Summary
A study by the Centre for Science and Environment (CSE) has revealed a worrying trend: vehicular pollution, specifically PM2.5 and NO2, saw a significant increase in Delhi-NCR during the early winter months of October and November. This rise is attributed to a combination of factors, including increased traffic, adverse weather conditions, and the cumulative impact of various pollution sources.
The study highlights that while industrial and power plant emissions have been somewhat controlled, vehicular pollution remains a major challenge, contributing significantly to the region's poor air quality. Essentially, it's a reminder that even as we tackle other sources, vehicle emissions are a persistent and growing problem, especially as temperatures drop.
Background
Latest Developments
Practice Questions (MCQs)
1. Consider the following statements regarding air pollution in Delhi-NCR during early winter months: 1. The recent study indicates a significant rise in PM2.5 and NO2 levels primarily due to increased industrial emissions. 2. Adverse meteorological conditions, such as lower wind speeds and temperature inversion, contribute to the trapping of pollutants. 3. Vehicular emissions are identified as a persistent and growing challenge, even as other sources like power plant emissions show some control. Which of the statements given above is/are correct?
- A.1 and 2 only
- B.2 and 3 only
- C.3 only
- D.1, 2 and 3
Show Answer
Answer: B
Statement 1 is incorrect. The news highlights that the rise is primarily attributed to vehicular pollution, not increased industrial emissions, which have shown some control. Statements 2 and 3 are correct as per the news and general understanding of winter pollution dynamics in Delhi-NCR. Adverse weather conditions like low wind speed and temperature inversion trap pollutants, and vehicular emissions are indeed a major and growing concern.
2. With reference to air pollutants, consider the following statements: 1. Particulate Matter (PM2.5) is a primary pollutant, while Nitrogen Dioxide (NO2) is exclusively a secondary pollutant. 2. Both PM2.5 and NO2 can penetrate deep into the lungs and cause respiratory and cardiovascular diseases. 3. Vehicular emissions are a significant source of both PM2.5 and NO2. Which of the statements given above is/are correct?
- A.1 and 2 only
- B.2 and 3 only
- C.3 only
- D.1, 2 and 3
Show Answer
Answer: B
Statement 1 is incorrect. PM2.5 can be both primary (directly emitted) and secondary (formed from other pollutants). NO2 is primarily a primary pollutant, directly emitted from combustion processes, though it can also participate in the formation of secondary pollutants like ozone and nitrates. Statement 2 is correct; both PM2.5 and NO2 are known to have severe health impacts due to their ability to penetrate the respiratory system. Statement 3 is correct; vehicular emissions, especially from diesel engines, are major contributors to both PM2.5 and NO2.
3. In the context of air quality management in the National Capital Region (NCR), which of the following statements is NOT correct?
- A.The Graded Response Action Plan (GRAP) is an emergency measure implemented based on the severity of air pollution levels.
- B.The Commission for Air Quality Management (CAQM) in NCR and Adjoining Areas is a statutory body established to coordinate efforts across states.
- C.Bharat Stage (BS) emission norms primarily regulate the quality of fuel used in vehicles, not the emissions from the vehicles themselves.
- D.The National Clean Air Programme (NCAP) aims for a 20% to 30% reduction in PM2.5 and PM10 concentrations by 2024, with 2017 as the base year.
Show Answer
Answer: C
Statement C is NOT correct. Bharat Stage (BS) emission norms are standards instituted by the Indian government to regulate the output of air pollutants from internal combustion engines and spark-ignition engines equipment. While fuel quality is a factor, the norms directly regulate the emissions from vehicles, not just the fuel quality. Statements A, B, and D are correct. GRAP is indeed an emergency plan, CAQM is a statutory body, and NCAP has the stated reduction targets.